Double differential space-time block coding for time-selective fading channels

Liu, Z.; Giannakis, Georgios B.; Hughes, B.L.

doi:10.1109/wcnc.2000.904591

Cited by 24 publications

(70 citation statements)

References 16 publications

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“…As in [6] and [7], we consider diagonal constellations based on the cyclic group whose unitary matrices V l are written as…”

Section: System Modelmentioning

confidence: 99%

“…Recently, Liu [6] and Ma [7] proposed a new modulation scheme that can handle both unknown channel and CFO. This method is based on unitary matrix group [2], [3] and uses time-domain double differential modulation, where the first differentiation is to remove the unknown channel and the second differentiation is to remove the unknown CFO.…”

Section: Introductionmentioning

confidence: 99%

“…This method is based on unitary matrix group [2], [3] and uses time-domain double differential modulation, where the first differentiation is to remove the unknown channel and the second differentiation is to remove the unknown CFO. Throughout this paper, we will name the original differential scheme proposed in [2], [3] as differential unitary space time modulation (DUSTM) while name the double differential scheme in [6], [7] as double differential unitary space time modulation (DDUSTM).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reduced Complexity ML Detection for Differential Unitary Space-Time Modulation with Carrier Frequency Offset

Gao

Nallanathan

Tellambura

2008

IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference

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Abstract-Recently, a maximum likelihood (ML) detection rule for differential unitary space time modulation (DUSTM) under the existence of unknown carrier frequency offset (CFO) has been derived. However, the ML detection is based on the exhaustive search over all the unitary group codes. In this paper, we design an efficient detection algorithm for newly derived ML rule, by modifying the bound intersection detector (BID). Our proposed algorithm is seen as a generalization of the existing BID that is known to be an optimal detector for the conventional DUSTM. The simulation results show that the proposed algorithm can save a large portion of the computational complexity compared to the naive searching method.

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“…As in [6] and [7], we consider diagonal constellations based on the cyclic group whose unitary matrices V l are written as…”

Section: System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reduced Complexity ML Detection for Differential Unitary Space-Time Modulation with Carrier Frequency Offset

Gao

Nallanathan

Tellambura

2008

IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference

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show abstract

“…Channel estimation 978-1-4673-0753-6/11/$26.00 ©2011 IEEE is therefore crucial, and can only be avoided through the use of STBC based on diferential or double diferential modulation [10], [11]. This alleviated the need for CSI, but requires the channel to remain stationary for a few successive symbol periods and incurs a performance degradation by 3dB and 6dB, respectively, compared to coherent modulation [lO], [11 ].…”

Section: Introductionmentioning

confidence: 99%

Channel estimation and tracking for closed loop EO-STBC with differentially encoding feedback

Hussin

Weiss

2011

2011 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT)

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Abstract-Extended orthogonal space time block coding (EO STBC) can achieve high transmit diversity over a multiple input mUltiple-output (MIMO) channel. To do so, it requires channel state information on the transmitter side, which needs to be estimated and fed back from the receiver. Therefore, this paper explores an estimation and tracking scheme by means of a Kalman ilter, which is integrated with EO-STBC detection and exploits the smooth evolution of the channel coeicients by applying differential feedback. For slow fading, we propose the inclusion of a drit vector in the Kalman model, which is motivated by a second order approximation of the underlying channel model and can be shown to offer advantages in terms of temporal smoothness when addressing channels whose coeicient trajectories evolve smoothly.

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“…The performance of DUSTM degrades greatly if the non-zero CFO is not compensated at the receiver before symbol detection. Recently, Liu [5] and Ma [6] proposed a new modulation scheme for MIMO and SISO-OFDM systems that could deal with both unknown CSI and CFO. This method applies a double differential modulation (DDUSTM) in time domain, where the effect of the unknown CFO is removed by double temporal differentiation.…”

Section: Introductionmentioning

confidence: 99%

Maximum Likelihood Detection and Optimal Code Design for Differential Unitary Space-Time Modulation with Carrier Frequency Offset

Cui

Gao

Nallanathan

et al. 2007

IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference

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Abstract-In this paper, we answer the question that "Can conventional differential unitary space time modulation (DUSTM) be applied when there is an unknown carrier frequency offset (CFO)?" and present a maximum likelihood (ML) detection rule for this scenario. We analyze the asymptotical performance of our ML detection and provide the code design criterion by using the modified diversity product. The analysis also brings the insight that our proposed decision rule is a new differential modulation scheme in both temporal and spatial domains. Various simulations are conducted, and the proposed algorithm is shown to be more robust to the CFO drifting than the existing double temporal differential modulation.

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Double differential space-time block coding for time-selective fading channels

Cited by 24 publications

References 16 publications

Reduced Complexity ML Detection for Differential Unitary Space-Time Modulation with Carrier Frequency Offset

Reduced Complexity ML Detection for Differential Unitary Space-Time Modulation with Carrier Frequency Offset

Channel estimation and tracking for closed loop EO-STBC with differentially encoding feedback

Maximum Likelihood Detection and Optimal Code Design for Differential Unitary Space-Time Modulation with Carrier Frequency Offset

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